Snort mailing list archives

RE: ICMP Source Quench


From: twig les <twigles () yahoo com>
Date: Mon, 7 Jul 2003 12:18:53 -0700 (PDT)

Yahoo still has a search engine?  ;-)

--- Bryan Waters <bryanw () abwaters com> wrote:
Of course...but I did my search on yahoo and the results were
so noisy that
I couldn't find anything specific on the topic.  Also...I
would have thought
that Snort would have had at least a blurb in the online rule
docs...since
they didn't and the yahoo results were so bad, i didn't push
it figuring it
was something rather esoteric.

-bryanw

-----Original Message-----
From: Chris Green [mailto:cmg () sourcefire com]
Sent: Monday, July 07, 2003 9:08 AM
To: Bryan Waters
Cc: snort-users () lists sourceforge net
Subject: Re: [Snort-users] ICMP Source Quench


"Bryan Waters" <bryanw () abwaters com> writes:

What is an "ICMP Source Quench"?

I have snort running and its working fine...i'm just looking
for a place
to
determine what some of the more poorly documented rules
are...so i can get
an idea of what exactly is happening and how much of a
threat it is...

Please tell me you atleast did (Lie if you have to :-)):

http://www.google.com/search?hl=en&query=ICMP+Source+Quench.

http://www.firewall.cx/icmp-source-quench.php

The additional $0.02 from experience:

Often times if you see ICMP source quenches your network is
either
flooding a particular network OR you netblock is being spoofed
and
some poor old sod is being flooded and can only yell at you
about it.

Try reverse dns on the Source IP and if it's an IRC server,
it's probably
the latter.
--
Chris Green <cmg () sourcefire com>
Fame may be fleeting but obscurity is forever.



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